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STABP01 데이터시트(PDF) 1 Page - STMicroelectronics |
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STABP01 데이터시트(HTML) 1 Page - STMicroelectronics |
1 / 7 page 1/7 STABP01 December 2002 s BASH® LICENCE REQUIRED DESCRIPTION The STABP01 processor is used to control the BASH® Digital Converter. When used in conjunction with BASH® amplifiers a fully integrated high efficien- cy power amplifier is realized. By analyzing the audio input, the Processor deter- mines the appropriate on/off events and generates a digital pulse for the Digital Converter. The converter turns this pulse into a power signal that feeds the power amplifier. The feedback system allows the pro- cessor to constantly adapt to the audio signal and re- generate the digital pulse thereby maintaining a constant voltage across the output devices. ORDERING NUMBERS: STABP01 (DIP20) STABP01D (SO20) SO20 DIP20 DIGITAL PROCESSOR BLOCK DIAGRAM + - + + - - R 1V 1V 10V 1V OUTPUT GROUND1 SOFT SW RESET S 1V 10V 2R R 1V COMP/3 1V 1V BUFFER 2200pF 50K 20K R162 17R C51 2200pF 1V CURRENT SENSE COMPARATOR ONE SHOT SIGNAL OPEN DRAIN OUTPUT DISCHARGE (RESET) TRANSISTOR FAST ATTACK CONTROL ERROR AMP COMP CURRENT_SENSE VFB V+ POWER SUPPLY1 CLOCK Rt Ct 250Hz 1V Q Q S Q R Q RESET CLK Q D Q RESET CLK D Q Q R S Q Q INTERNAL CIRCUIT ON UVLO: 7V = on 5V = off SOFT SWITCH PWM LATCH VREF BUFFER OUT REC_OUT BUFFER IN FA IN 1V 10V 10V DEAD TIME 10V D00AU1219 OUTPUT GROUND2 ONE SHOT DELAY POWER_VS2 ONE SHOT DUTY ACCEL 1V 1V R |
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